// Copyright 2004-2010 Castle Project - http://www.castleproject.org/
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

namespace Commons.Collections
{
    using System;
    using System.Collections;

    public class KeyedListEnumerator : IDictionaryEnumerator
    {
        private int index = -1;
        private readonly ArrayList objs;

        internal KeyedListEnumerator(ArrayList list)
        {
            objs = list;
        }

        public bool MoveNext()
        {
            index++;

            if (index >= objs.Count)
            {
                return false;
            }

            return true;
        }

        public void Reset()
        {
            index = -1;
        }

        public object Current
        {
            get
            {
                if (index < 0 || index >= objs.Count)
                {
                    throw new InvalidOperationException();
                }

                return objs[index];
            }
        }

        public DictionaryEntry Entry => (DictionaryEntry)Current;

        public object Key => Entry.Key;

        public object Value => Entry.Value;
    }
}